Double-action pump.



w. s. McFERREN.

DOUBLE ACTION PUMP.

APPLICATION men Iuu: l3. I916.

1 ,217, 1 95. Patented Feb. 27, 1917.

gwuentoz mr .vmmrs PETERS no.v FHOYOALIYNOWWASHINGTVN. u c.

barren snares PATENT armpit.

WILLIAM s. MCFERREN, OF CHAMBERSBURG, PENNSYLVANIA, ASSIGNOB. or ONE-THIRD T0 HARRY A. BERG-NEE, or GI-IAMBERSBURG, PENNSYLVANIA.

DOUBLE-ACTION PUMP.

Application filed June 13, 1916.

To all whom it may concern:

Be it known that 1, WILLIAM S. MCFER- REN, a citizen of the UnitedStates residing at Chambersburg, in the county of Franklin and State ofPennsylvania, have invented certain new and useful Improvements inDouble-Action Pumps; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as Wlll enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to certain new and useful improvements in pumpsand it relates more particularly to that class known as force pumps inwhich two pistons are employed.

The invention has for its specific object the provision of a pump ofthis character in which the two piston chambers are arranged in contact,one being disposed above the other, each of the pistons being operatedby a single operating handle, so connected with the piston rods as tocause the pistons to actuate alternately.

To these ends and to such others as the invention may pertain, the sameconsists in the novel construction and in the peculiar arrangement,combination and adaptation of parts, all as will be more fullyhereinafter described, shown in the accompanying drawings and thenspecifically defined in the appended claim.

The invention is clearly illustrated in the accompanying drawings which,with the numerals of reference marked thereon, form a part of thisspecification and'in which:

Figure l is a side elevation, partly in section, of a pump embodying thefeatures of my invention.

Fig. 2 is a side elevation showing a modilied form of connection betweenthe operating handle and 'valve rod.

Reference now being had to the details of the drawings by numeral, 1designates a well, and 2 is a well pipe provided with the usual flapvalve 3. 1 and 5 designate pump cylinders, disposed one above the other,the lower cylinder 5 being disposed slightly to one side. The cylinderhead 6 separates the Specification of Letters Patent.

Patented Feb. 27, 1917. Serial No. 103,485.

two cylinders and serves as a head for both cylinders, being providedwith an opening 7 connecting the interior of the chambers.

8 is an operating handle pivoted at the upper end of the standard 9, thesaid handle being provided with a series of openngs 10, 10 so as toprovide for general adjustment, the handle being attached to thestandard by means of a pivotal pin 11 passed through the bifurcatedupper end of the standard. The openings 10, 10 are connected to thehooked upper ends of the rods 12 and 13, which rods are pivotallyconnected at their lower ends to the upper ends of the rods 14. and 15which in turn are connected to the pistons 16 and 17 contained withinthe cylinders 4 and 5 respectively. 18, 18 are keepers, consisting ofmetallic strips placed upon opposite sides of the pump 2 and between theouter ends and in an aperture provided therein are journaled rollerbearings 19 between which are passed the pump rods 14 and 15. Thepistons 16 and 17 are each provided with the usual form of flap valve20, 20. 21, 21 are braces for strengthening the connection between thepump rods and piston handle.

In Fig. 2 of the drawings I have shown a slight modification in theconnection between the operating handle of the pump and the pump rods.In this construction, the keeper 18 is disposed at a point above thewell platform and at its outer ends the pump rods 14 and 15 are passedbetween roller bearings 19, as shown. By this construction a directvertical movement is imparted to the piston rods'by the movement of thepump handle.

From the foregoing description, the operation of the pump will be atonce readily understood. In'the drawings I have shown the operatinghandle in such position as to insure the closing of the valve in theupper cylinder, while the valve in the lower cylinder is open. Inforcing the pump handle downward, the lower piston valve 20 will beclosed by the pressure of water contained in the upper cylinder and inthe continued upper movement the waterv contained in the pipe above theupper'chamber will be raised until the piston has reached its limit ofupward movement. A reverse movement of the pump handle will serve toclose the valve in the upper piston chamber and simultaneously open theValve in the lower chamber.

Having thus described my invention, what I claim to be new is A doubleacting pump comprising two eccentrically mounted pump cylinders having acommon head, the heads of the two cylinders having eccentrically formedopenings for the reception of piston rods, pistons mounted one in eachcylinder, piston rods eccentrically connected to each piston and mo'iable through said apertures, brace rods within said cylinders, one beingconnected to each piston rod and to a piston, and 15 means'for actuatingthe piston rods.

In testimony whereof I hereunto afiix my signature in presence of twowitnesses.

WILLIAM S.- MOFERREN. Witnesses:

S. H. MCFERREN, FRANK ORR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Eatents, Washington, D. G.

